Upper Intake - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

Reply
 
 
 
Thread Tools Search this Thread
Old 02-11-2005, 01:51 PM   #1
Senior Member
True Car Nut
Thread Starter
 
Join Date: Feb 2004
Location: Pennsylvania
Posts: 5,177
Thanks: 0
Thanked 0 Times in 0 Posts
Twister97 is on a distinguished road
Default Upper Intake

You know how someone sells that Upper Intake spacer, which gives ya an extra 5hp or so? What if I would to buy a new Upper intake from ebay, like a Dormon one or something, and open up the holes a little bit? Almost like a porting job, but it looks plastic so is that possible at all?
Twister97 is offline   Reply With Quote
Old 02-11-2005, 02:35 PM   #2
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

The intake is a two-piece arrangement on L27'* and L36'*. An insert inside the outer shell. The runner lengths are more important for performance rather than the size, and increasing sizes won't do alot of good unless you also port the LIM and bump your valve sizes up some (or rockers/cam).

The idea of variable length runners for an upper intake design has alot of merit. Intake manifolds can be tuned for high or low end performance, but a variable can provide both.

If you're going to try something like this, try for the Series 3 intake, and convert.
willwren is offline   Reply With Quote
Old 02-11-2005, 02:45 PM   #3
Senior Member
True Car Nut
Thread Starter
 
Join Date: Feb 2004
Location: Pennsylvania
Posts: 5,177
Thanks: 0
Thanked 0 Times in 0 Posts
Twister97 is on a distinguished road
Default

You mean a series 3 can be fitted to a 2? Thats kinda cool
Twister97 is offline   Reply With Quote
Old 02-11-2005, 02:51 PM   #4
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

I believe so. Some of the guys at CGP have looked into this. We have the identical lower intake manifolds (I already verified this), so anything they can do, we can leverage.

The S3 UIM is aluminum, btw.
willwren is offline   Reply With Quote
Old 02-11-2005, 02:54 PM   #5
Senior Member
True Car Nut
Thread Starter
 
Join Date: Feb 2004
Location: Pennsylvania
Posts: 5,177
Thanks: 0
Thanked 0 Times in 0 Posts
Twister97 is on a distinguished road
Default

Might have to keep my eye out for a used one. Im sure a new one is still pretty pricey at this point. Now, would I have any problems with clearance if I added rockers or a new TB or anything else?
Twister97 is offline   Reply With Quote
Old 02-11-2005, 04:44 PM   #6
Senior Member
Certified Car Nut
 
Join Date: Oct 2003
Posts: 19,756
Thanks: 0
Thanked 0 Times in 0 Posts
1993 SLE is on a distinguished road
Default

the only thing that is needed for a SIII swap is a TB adapter, because the SIII has the electric TB
1993 SLE is offline   Reply With Quote
Old 02-11-2005, 10:13 PM   #7
Senior Member
True Car Nut
 
95naSTA's Avatar
 
Join Date: Feb 2003
Location: Philly
Posts: 4,508
Thanks: 0
Thanked 0 Times in 0 Posts
95naSTA is on a distinguished road
Default

So far people that are n/a with the ser 3 UIM have lost power. I think it'* because of the longer TB neck adding UIM volume. But no one knows for sure.
95naSTA is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Anyone tell if this is a upper control arm or an entire upper, lower, knuckle? GunsOfNavarone General GM Chat 4 11-26-2014 01:45 PM
3.5L upper intake on 3.4L lower intake/engine LA1 Chevrolet 3 10-24-2014 02:32 PM
Cracked upper inake, or bad intake gasket? brminder 1992-1999 2 03-24-2003 07:37 PM
Upper intake Repair done jebstuart 1992-1999 3 01-24-2003 08:43 PM
upper intake plenum 95 and on.. Custom88 General GM Chat 28 01-07-2003 06:52 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 05:42 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.